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Haswell Overclocking Guide [With Statistics] - Page 647

post #6461 of 19540
Been using my cpu @ 4.7 to mine lately, it's pretty darn fast at 1.1 Mhash/s. Runs hot though, averages about 93 C. Thinking about delidding...
post #6462 of 19540
Quote:
Originally Posted by Shanenanigans View Post

It can explain why BF4 is causing crashes while other stuff like x264 isn't.

x264 uses avx2 for a notable performance gain. Can we write that in OP? I've seen this said like a dozen times by now~
Quote:
I think 1.3V is a solid line to not cross

I don't believe so, with good temps i'd set my limit at 1.4v or so for an OC that i was going to use normally (and not fold on etc)

1.35v maybe if you wanna be safe (1.33v vid, 1.35 load vcore) but 1.3 is extremely conservative, we have quite a few people over 1.4 and Belial using 1.47.

If your chip is still scaling good, that is, you're paying 0.03 or 0.04v (even 0.05v) per 100mhz, and not 0.07v, then i wouldn't hesitate to go into the 1.3-1.33 range for bios vcore (0.02 is added on top of that) for 5ghz.
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post #6463 of 19540
My 4770k @ 4.6GHz would load into Windows but as soon as I ran Prime95 on Blend the computer rebooted. This was with uncore at 35 and RAM underclocked to 1333MHz with CPU volts ranging from 1.2v to 1.375v.

Problem here is that my chip is not dilided (will do that soon) and I hit the thermal limit before I do the volt wall. For instance, at 4.5GHz it was stable in Prime 95 for 15min but I had to exit Prime since the temps hit over 100C. Mind you my cooler is the Corsair H60 with the stock fan in a push configuration.

I plan to delid and run a full open water loop. Having some fun with it right now to see what I can achieve on a basic enthusiast overclocking system.

All that is not a concern though. What is a concern is that the overclock at 4.6GHz became instantly unstable when I ran the RAM at its rated 2400MHz. I see most people recommend that you initially don't run your RAM at 2400MHz when overclocking. However, once you reach a stable overclock, will the system run properly with RAM at 2400MHz or will I need to also play with the Analog I/O and Digital I/O Voltage Offsets and or perhaps give my RAM at 1.65v more volts?
 
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post #6464 of 19540
Quote:
This was with uncore at 35
Quote:
Prime 95

There's your problems

If you have uncore set at 35, it'll run at 40x - isn't that in the guide?

For RAM, ideally you'd check stability of the 2400mhz @ stock or a profile like 4ghz/3.4ghz, and then add it to your overclock profile once that is long-term stable. It should just drop in fine, but you might have to play with volts a little bit when everything else is fine
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post #6465 of 19540
Uncore which on my Asus is the Min/Max CPU Cache Ratio - right? I think the OP mentioned that if your CPU is 3.5GHz stock, then try running the Uncore at 35.

I used Memtest86+ on each Module of RAM and they Passed. They are also stable at everything else. Ok, basically once OC is stable, the RAM should fall in line with possibly some voltage tweaks with the Analog I/O and Digital I/O Voltage Offsets and or perhaps some more RAM volts.
 
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Intel i7 4770k @ 4.5GHz Asus Maximus VI Gene Gigabyte R9 290 @ 1160MHz/1350MHz Gigabyte R9 290 @ 1160MHz/1350MHz 
RAMHard DriveHard DriveOptical Drive
G.Skill Trident X 2X8GB DDR3 2400MHz Samsung 840 PRO 256GB  Seagate Barracuda 7200.14 3TB SATA III 6Gb/s 64... Pioneer Blu-ray Burner 
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Intel Core i5-3570K @ 4.6GHz ASRock Z77E-ITX mITX  Sapphire HD 7990 @ 1090MHz/1600MHz G.SKILL Ripjaws 2X4GB DDR3-1600 @ 1866MHz 
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Win 7 Professional x64bit Samsung 52" 1080p 60Hz LCD Logitech Wireless K330 Corsair AX850 Gold Fully Modular 
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BitFenix Prodigy Mini-ATX Black  Logitech Wireless M215 Corsair Vengeance MM200 Yamaha RX-V681 & PSB/Polk Audio 5.1 
CPUMotherboardGraphicsRAM
AMD Athlon II X4 640 ASRock N68C-GS NVIDIA 6600GT G. Skill Ripjaws DDR3 1600MHz 
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WD Caviar Blue 500GB 16MB Cache 7200RPM LG Optical Drive Thermaltake Max Orb Windows 7 
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post #6466 of 19540
Quote:
Originally Posted by Gunderman456 View Post

Uncore which on my Asus is the Min/Max CPU Cache Ratio - right? I think the OP mentioned that if your CPU is 3.5GHz stock, then try running the Uncore at 35.

I used Memtest86+ on each Module of RAM and they Passed. They are also stable at everything else. Ok, basically once OC is stable, the RAM should fall in line with possibly some voltage tweaks with the Analog I/O and Digital I/O Voltage Offsets and or perhaps some more RAM volts.

I think its only gigabyte boards that run the uncore up to x40 when set at x35.....If you run XTU it will show you what your Uncore is running at under a stress test.
Edited by lawson67 - 12/5/13 at 11:12am
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post #6467 of 19540
CPU-Z shows it too

The uncore will turbo on many boards
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post #6468 of 19540
Just on BF4 .. I don't see a 0.1v increase.
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post #6469 of 19540
it's new chip time! wheee.gif
post #6470 of 19540
Time to mess around with offset. Seeing stupid increases in voltage when using adaptive while gaming. Granted, I'm not seeing temp increases. I just don't like shooting up to 1.42 when it's supposed to be at 1.34ish.
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